The FCMRT7542-WF male run tee is a 1/4-Inch Tube x 1/4-Inch Tube x 1/8-Inch Thread Compression Connector. It includes two 1/4-inch nuts. The FCMRT7542-WF is also usable with the Jaco 7542_O, 7542NO, LQ7542, Jeak JK7542, and other 1/4-Inch Tube x 1/8-Inch Thread Male Run Tee fittings. The FCMRT7542-WF male run tee can be used to connect 1/4-inch tubing on one side, 1/4-inch tubing on the bottom, and 1/8-inch thread on one side.